Fundamentals of Probability and Statistics for Enginers 372

Fundamentals of Probability and Statistics for Enginers 372 Fundamentals of Probability and Statistics for Engineers A.6 D2 DISTRIBUTION WITH SAMPLE SIZE Table A.6 D2 distribution with sample size n: a table of cn,a in P(D2 > Cnn) = , for = 0.01 to 0.10, n = 5, 10, . . . rn 0.10 0.05 0.01 0.51 0.37 0.30 0.26 0.24 0.22 0.19 1.22 Il 0.56 0.41 0.34 0.29 0.26 0.24 0.21 1.36 0.67 0.49 0.40 0.35 0.32 0.29 0.25 1.63 10 15 20 30 40 Large n From Lindgren, B.W.. 1962, Statistical Theory, Macmillan, with permission.

Solution

as we dont have n = 210 you will aproximate to the closest

that is large n because large n in this case is greater than 40

and you have n = 210

and we have alpha = 0.05

so the value is

1.36 / srqt ( 210) = 0.0938

the value is 0.0938